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Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

A. Black

B. Silver grey

C. Green

D. Yellow

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.
  2. The underground well of a biogas plant is called the
  3. For separating small pieces of metal from engine oil of a car, the best separating technique is the
  4. __________ of grey cast iron produces white cast iron.
  5. Function of gear box is to
  6. Pick out the wrong statement.
  7. In the blast furnace, incorporation of water vapour in the blast gives the following effect.
  8. Which of the following does not discharge the dust collected as a dry solid?
  9. The lightest non-inflammable gas is
  10. Cold chisels hammers are made of
  11. Which of the following represents the correct time-temperature curve when a block of metal is heated…
  12. The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of…
  13. Triple point of water is
  14. In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold…
  15. Temper brittleness of a material can be fairly detected by the __________ test.
  16. Ultimate strength in tension as compared to that in shear for steel is
  17. Which of the following hardness tests does not measure the indentation hardness of metals and alloys?
  18. Pick out the wrong statement.
  19. Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.
  20. Satellites burn off during re-entry to earth's atmosphere, because of the
  21. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about
  22. Which of the following gases cause global warming?
  23. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal &…
  24. Direct conversion of thermal energy to electrical energy is facilitated by the
  25. Production of a hollow product by inflation of a tube or parison is called the __________ process.
  26. Working of linear variable differential transducer (LVDT) is based on the principle of variable
  27. Pick out the wrong statement about the machinability of metals. Machinability of a metal
  28. A reduction in thermal resistance during heat transfer does not occur in the
  29. Carbon supply in pack carburising process is in the form of
  30. Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.